$PSIMP,D1,tt,dd,M,U,SNo,MNo,C,V,CR,Q,In,SL,NL,G,Cb,error*chksum<CR><LF>
1 | PS: Talker identifier |
2 | IMP: Datagram identifier |
3 | D1: Sentence specifier |
4 | tt: Time |
5 | dd: Date |
6 | M: Type of measurement
|
7 | U: Unit of measurement (Always SI units)
|
8 | SNo: Sensor number |
9 | MNo: Measurement number |
10 | C: Channel (This is the number of the communication channel for the current data source. (1 ‑ 30)) |
11 | V: Value (This is the magnitude of the measurement made by the sensor.) |
12 | Cr: Change rate |
13 | Q: Quality
|
14 | In: Interference
|
15 | SL: Signal level (dB // 1 µPa) |
16 | NL: Noise level (dB // 1 µPa) |
17 | G: Gain (0, 20 or 40 dB) |
18 | Cb: Cable quality
|
19 | error: Error (0 means that no errors ares detected. Any other value indicates an error condition.) |
20 | chksum: Checksum (The checksum field consists of a "*" and two hex digits representing the exclusive OR of all characters between, but not including, the "$" and "*" characters.) |